$ time ./tshark -r /tmp/nothing.pcap # reading an empty pcap file
# with all the extcap binaries present
real 0m4.089s
user 0m0.694s
sys 0m2.637s
$ time ./tshark -r /tmp/nothing.pcap # reading the same empty pcap file
# with the extcap binaries removed
real 0m0.540s
user 0m0.310s
sys 0m0.220s
So it took *four seconds* of real time, and over *two seconds* of system-mode
CPU time, to run, I guess, extcap_register_preferences(), and all the stuff it
runs.
Does it need to take that long?
If it does need to take that long, do we need to do that if we're not capturing?
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